{"city":"Chengjiang","country":"China","lat":29.87194061279297,"lon":106.3846664428711,"range":"48h","license":"CC BY 4.0","source":"https://cerns.io","hourly":[{"datetime_utc":"2026-05-28T07:00:00Z","aqi":59,"aqi_min":13,"aqi_max":80,"pm25":15.89,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T08:00:00Z","aqi":51,"aqi_min":42,"aqi_max":59,"pm25":12.29,"pm10":null,"stations":10},{"datetime_utc":"2026-05-28T09:00:00Z","aqi":53,"aqi_min":13,"aqi_max":104,"pm25":13.08,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T10:00:00Z","aqi":65,"aqi_min":50,"aqi_max":99,"pm25":18.92,"pm10":null,"stations":8},{"datetime_utc":"2026-05-28T11:00:00Z","aqi":64,"aqi_min":22,"aqi_max":97,"pm25":18.33,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T12:00:00Z","aqi":63,"aqi_min":34,"aqi_max":112,"pm25":17.66,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T13:00:00Z","aqi":61,"aqi_min":30,"aqi_max":97,"pm25":16.87,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T14:00:00Z","aqi":67,"aqi_min":57,"aqi_max":76,"pm25":19.47,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T15:00:00Z","aqi":70,"aqi_min":33,"aqi_max":104,"pm25":21.24,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T16:00:00Z","aqi":58,"aqi_min":18,"aqi_max":89,"pm25":15.21,"pm10":null,"stations":6},{"datetime_utc":"2026-05-28T17:00:00Z","aqi":54,"aqi_min":13,"aqi_max":89,"pm25":13.65,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T18:00:00Z","aqi":64,"aqi_min":18,"aqi_max":127,"pm25":18.53,"pm10":null,"stations":11},{"datetime_utc":"2026-05-28T19:00:00Z","aqi":57,"aqi_min":28,"aqi_max":80,"pm25":15.12,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T20:00:00Z","aqi":59,"aqi_min":19,"aqi_max":91,"pm25":15.92,"pm10":null,"stations":8},{"datetime_utc":"2026-05-28T21:00:00Z","aqi":48,"aqi_min":16,"aqi_max":65,"pm25":11.53,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T22:00:00Z","aqi":52,"aqi_min":15,"aqi_max":117,"pm25":12.5,"pm10":null,"stations":10},{"datetime_utc":"2026-05-28T23:00:00Z","aqi":58,"aqi_min":13,"aqi_max":89,"pm25":15.59,"pm10":null,"stations":9},{"datetime_utc":"2026-05-29T00:00:00Z","aqi":55,"aqi_min":14,"aqi_max":80,"pm25":13.84,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T01:00:00Z","aqi":60,"aqi_min":12,"aqi_max":97,"pm25":16.32,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T02:00:00Z","aqi":34,"aqi_min":23,"aqi_max":53,"pm25":8.19,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T03:00:00Z","aqi":52,"aqi_min":21,"aqi_max":74,"pm25":12.46,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T04:00:00Z","aqi":45,"aqi_min":18,"aqi_max":76,"pm25":10.84,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T05:00:00Z","aqi":67,"aqi_min":23,"aqi_max":151,"pm25":19.52,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T06:00:00Z","aqi":56,"aqi_min":13,"aqi_max":97,"pm25":14.7,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T07:00:00Z","aqi":74,"aqi_min":49,"aqi_max":116,"pm25":22.88,"pm10":null,"stations":5},{"datetime_utc":"2026-05-29T08:00:00Z","aqi":76,"aqi_min":13,"aqi_max":134,"pm25":24.24,"pm10":null,"stations":9},{"datetime_utc":"2026-05-29T09:00:00Z","aqi":74,"aqi_min":42,"aqi_max":123,"pm25":23.1,"pm10":null,"stations":8},{"datetime_utc":"2026-05-29T10:00:00Z","aqi":63,"aqi_min":30,"aqi_max":115,"pm25":17.88,"pm10":null,"stations":12},{"datetime_utc":"2026-05-29T11:00:00Z","aqi":67,"aqi_min":13,"aqi_max":89,"pm25":19.56,"pm10":null,"stations":11},{"datetime_utc":"2026-05-29T12:00:00Z","aqi":63,"aqi_min":42,"aqi_max":103,"pm25":17.67,"pm10":null,"stations":9},{"datetime_utc":"2026-05-29T13:00:00Z","aqi":70,"aqi_min":45,"aqi_max":93,"pm25":20.95,"pm10":null,"stations":10},{"datetime_utc":"2026-05-29T14:00:00Z","aqi":60,"aqi_min":16,"aqi_max":114,"pm25":16.35,"pm10":null,"stations":11},{"datetime_utc":"2026-05-29T15:00:00Z","aqi":70,"aqi_min":44,"aqi_max":89,"pm25":21.1,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T16:00:00Z","aqi":67,"aqi_min":53,"aqi_max":83,"pm25":19.95,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T17:00:00Z","aqi":64,"aqi_min":14,"aqi_max":97,"pm25":18.42,"pm10":null,"stations":13},{"datetime_utc":"2026-05-29T18:00:00Z","aqi":43,"aqi_min":15,"aqi_max":64,"pm25":10.38,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T19:00:00Z","aqi":60,"aqi_min":41,"aqi_max":82,"pm25":16.19,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T20:00:00Z","aqi":55,"aqi_min":15,"aqi_max":80,"pm25":14.17,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T21:00:00Z","aqi":95,"aqi_min":87,"aqi_max":104,"pm25":32.97,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T22:00:00Z","aqi":63,"aqi_min":26,"aqi_max":85,"pm25":17.87,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T23:00:00Z","aqi":51,"aqi_min":20,"aqi_max":93,"pm25":12.32,"pm10":null,"stations":10},{"datetime_utc":"2026-05-30T00:00:00Z","aqi":61,"aqi_min":26,"aqi_max":112,"pm25":17.05,"pm10":null,"stations":8},{"datetime_utc":"2026-05-30T01:00:00Z","aqi":70,"aqi_min":55,"aqi_max":87,"pm25":21.13,"pm10":null,"stations":8},{"datetime_utc":"2026-05-30T02:00:00Z","aqi":62,"aqi_min":12,"aqi_max":93,"pm25":17.23,"pm10":null,"stations":8},{"datetime_utc":"2026-05-30T03:00:00Z","aqi":64,"aqi_min":46,"aqi_max":72,"pm25":18.07,"pm10":null,"stations":5},{"datetime_utc":"2026-05-30T04:00:00Z","aqi":51,"aqi_min":14,"aqi_max":68,"pm25":12.21,"pm10":null,"stations":8}],"daily":[{"date":"2026-05-28","aqi_avg":59,"aqi_min":48,"aqi_max":70,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":16.0,"pm10_avg":null,"hours":17,"stations_avg":8},{"date":"2026-05-29","aqi_avg":62,"aqi_min":34,"aqi_max":95,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":17.6,"pm10_avg":null,"hours":24,"stations_avg":8},{"date":"2026-05-30","aqi_avg":62,"aqi_min":51,"aqi_max":70,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":17.1,"pm10_avg":null,"hours":5,"stations_avg":7}]}